git-cl will print the path to the collected traces and git info,
but will only display the detailed message when git-cl fails.

Bug: 961663, 955206
Change-Id: I0a4d470aba24d696bdd5e02e069833f47cf56c02
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/1615665
Commit-Queue: Edward Lesmes <ehmaldonado@chromium.org>
Reviewed-by: Dirk Pranke <dpranke@chromium.org>